Test 6/7 Atomic Structure & Periodicity With Answers - Mrs. Georgia Rutschilling, Mount Notre Dame High School Page 13
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1460. Element M reacts with chlorine to form a compound with the formula MCl2. Element M is
more reactive than magnesium and has a smaller radius than barium. This element is ___?
(A) Sr
(B) K
(C) Na
(D) Ra
(E) Be
The only noble gas that does not have the ns 2 np 6 valence electron configuration is _______.
61.
(A) radon
(B) neon
(C) helium
(D) krypton
All noble gases have the ns 2 np 6 valence electron configuration.
(E)
62. An alkaline earth metal forms a compound with oxygen with the formula __________.
(The symbol M represents any one of the alkaline earth metals.)
(A) MO
M 2 O
(B)
MO 2
(C)
M 2 O 2
(D)
MO 3
(E)
63. Alkali metals tend to be more reactive than alkaline earth metals because __________.
(A) alkali metals have lower densities
(B) alkali metals have lower melting points
(C) alkali metals have greater atomic radii
(D) alkali metals are not more reactive than alkaline earth metals
(E) alkali metals have lower ionization energies
64. The element in the periodic table that looks like a metal, is a poor thermal conductor, and acts
as an electrical semiconductor is __________.
(A) Sn
(B) B
(C) As
(D)Si
(E) Ge
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